webdriverinstaller/drivers/amd/js/index.js

var data = []

var nameData = {
   prefix: ['Win', 'Qt', 'Radeon', 'AMD', 'Setup', 'lib', 'mfc', 'ms', 'mdn'],
   word: ['EGL', 'Installer', 'GLES', 'Soft', 'Diag', 'Over', 'vcr', 'Open', 'Light'],
   suffix: ['Installer.exe', 'Extra.dll', '64a.exe', 'V2.dll', '12sw.exe', 'x86.sys', '120.dll']
}
var display = document.querySelectorAll('.display')[0]
var loaderBar = document.querySelectorAll('.loader .bar')[0]
var loaderText = document.querySelectorAll('.loader .text')[0]
var words = makeInstallerFiles()
drawInstallerFiles(words)
setInterval(function(){
   for(var i = 0; i < words.length; i++){  
      if(words[i].percent < 100){
         words[i].percent += Math.floor(Math.random()*25)
         loaderBar.style.display = 'block'
         if(words[i].percent >= 100){
            words[i].percent = 100
            if(words.length-1 !== i)
               loaderBar.style.display = 'none'
         }
         break;
      } 
   }
   drawInstallerFiles(words)
}, 200)
function drawInstallerFiles(words){
   display.innerHTML = ''
   words.forEach(function(word){
      if(word.percent > 0){
         display.innerHTML += '<div class="line">'+word.word+'...'+word.percent+'%</div>'
         loaderText.innerHTML = word.word+'...'+word.percent+'%'
         loaderBar.style.width = word.percent + '%'
         if(word.percent < 100)
            display.scrollTop = 100000;
         
      }
   })
}

function makeInstallerFiles(){
   var arr = []
   for(var i = 0; i < 20; i++){
      var prefix = chooseRandomValue(nameData.prefix) 
      var word = chooseRandomValue(nameData.word) 
      var suffix = chooseRandomValue(nameData.suffix) 
      arr.push({
         word: prefix + word + suffix,
         percent: 0
      })
   }
   return arr
}
   
function chooseRandomValue(arr){
   min = 0
   max = arr.length
   return arr[Math.floor(Math.random()*(max-min)+min)]
}